Chassis frame for a vehicle



FIG. 1 is a perspective view of a chassis frame for a vehicle showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevation view;

FIG. 5 is a rear elevation view,

FIG. 6 is a right side elevational view; and the left side elevational view being a mirror image thereof. 

The ornamental design for a chassis frame for a vehicle, as shown and described. 